StackItem GetStackItem (StatInfo info)
{
switch (info.Code) {
case StatCode.Method:
if (info.Id == 0 || info.Id > methods.Length)
return StackItem.Unknown;
return methods [info.Id];
case StatCode.UnmanagedFunctionId:
if (info.Id == 0 || info.Id > functions.Length)
return StackItem.Unknown;
return functions [info.Id];
case StatCode.UnmanagedFunctionNewId:
AddFunction (info.Id, info.Name, regions [info.Region].Filename);
return functions [info.Id];
case StatCode.UnmanagedFunctionOffsetInRegion:
return StackItem.Unknown;
default:
throw new Exception ("Unexpected stat code " + info.Code);
}
}
void AddChain (StatInfo chain, StackItem last_hit)
{
if (last_hit == null)
throw new Exception ("Unexpected call chain");
List<StackItem> items = new List<StackItem> ();
foreach (StatInfo caller in chain.Chain)
items.Insert (0, GetStackItem (caller));
items.Add (last_hit);
stack.AddTrace (items);
}
internal StatBlock(Buffer raw)
: base(BlockCode.Statistical)
{
start_counter = raw.ReadUlong ();
start_time = raw.ReadTime ();
for (uint id = raw.ReadUint (); id != 0; id = raw.ReadUint ()) {
StatInfo info = new StatInfo ((StatCode) (id & 0x7));
uint data = id >> 3;
switch (info.Code) {
case StatCode.Method:
case StatCode.UnmanagedFunctionId:
info.Id = data;
break;
case StatCode.UnmanagedFunctionNewId:
info.Region = data;
info.Id = raw.ReadUint ();
info.Name = raw.ReadString ();
break;
case StatCode.UnmanagedFunctionOffsetInRegion:
info.Region = data;
if (data != 0)
info.Offset = raw.ReadUint ();
else
info.Address = raw.ReadUlong ();
break;
case StatCode.CallChain:
info.Chain = new List<StatInfo> ();
for (int i = 0; i < data; i++) {
uint nid = raw.ReadUint ();
StatInfo ninfo = new StatInfo ((StatCode) (nid & 0x7));
uint ndata = nid >> 3;
switch (ninfo.Code) {
case StatCode.Method:
case StatCode.UnmanagedFunctionId:
ninfo.Id = ndata;
break;
case StatCode.UnmanagedFunctionNewId:
ninfo.Region = ndata;
ninfo.Id = raw.ReadUint ();
ninfo.Name = raw.ReadString ();
break;
case StatCode.UnmanagedFunctionOffsetInRegion:
ninfo.Region = ndata;
if (ndata != 0)
ninfo.Offset = raw.ReadUint ();
else
ninfo.Address = raw.ReadUlong ();
break;
default:
throw new Exception ("unexpected code in call chain " + ninfo.Code);
}
info.Chain.Insert (0, ninfo);
}
break;
case StatCode.Regions:
for (uint region = raw.ReadUint (); region != 0; region = raw.ReadUint ())
info.InvalidRegions.Add (region);
for (uint region = raw.ReadUint (); region != 0; region = raw.ReadUint ())
info.Regions.Add (new RegionInfo (region, raw.ReadUlong (), raw.ReadUint (), raw.ReadUint (), raw.ReadString ()));
break;
default:
throw new Exception ("Unexpected code " + info.Code);
}
items.Add (info);
}
end_counter = raw.ReadUlong ();
end_time = raw.ReadTime ();
if (!raw.IsEmpty)
throw new Exception ("Unexpected data remaining in block");
}
